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Question
Assertion (A): Excessive use of chlorinated pesticide causes soil and water pollution.
Reason (R): Such pesticides are non-biodegradable.
Options
Both A and R are correct and R is the correct explanation of A.
Both A and R are correct but R is not the correct explanation of A.
Both A and R are not correct.
A is not correct but R is correct.
Solution
Both A and R are correct and R is the correct explanation of A.
Explanation:
Since pesticides are synthetic toxic chemicals with ecological repercussions and their repeated use gives rise to pests that are resistant to that group of pesticides and hence making the pesticides ineffective. Therefore, as insect resistance of DDT increased, other organic toxins such as Aldrin and Dieldrin got introduced in the market by the pesticide industry. Most of the organic toxins are water insoluble and are non-biodegradable.
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